Means for soldering aluminium.



C. E. STEINWEG. MEANS FOR SOLDEBING ALUMINIUM.

APPLICATION FILED FEB. 9, 1909.

1,052,76 1 Patented Feb. 11, 1913.

Fig.1. Figi. Fig.2. FigZ. Fig.3. Fig.3.

I E STATES PATENT" OFFICE.

CARL EDUARD s'iEiNw ae, o1 L'U'DENSCHEID, GERMANY.

MEANS FOR soLnEm vG AL MIiqiUm.

To all it may concern.

Beit known that I, CARL WEG, acitizen of the German Emp re and resident of Li'idenscheid, Germany, have in- 5 vented certain new and useful Improvements in Means for Soldering Aluminium,

of which the following is a specification.

My invention relatesto means for solder ing aluminium, consisting in a soldering dering of aluminium.

The. object of my invention is to rovide a soldering sticksimplein form an manufacture and of easy application;

consisting of pure aluminium or a rich aluminium alloy in vconnection with a. flux capable-of dissolving oxid of aluminium consisting of a composition "ofelements of different melting and volatilizing points and by melting such 'fluxbyindirect heating preferabl in. a. metal receptacle which in a preferr embodimenfof the invention is formed by the soldering metal itself. u

contains a high percentage of. aluminium in theform of an aluminium oxid dissolving flux mixture in metallic inolosuresaid mixture comprising components of different melting and volatilizing points. In connection herewith it is to be understood that by rich aluminium alloy,* as I use this term here and in the annexed claiiris, I 'mean. an

85 alloy which contains morethan 75% of aluminium. "By using such flux com ition which preferably contains; chlori s" and ,fluorids, such as sodium, chlorid, potassium chlorid and cryoliteand' by preventing the 40 ingredients. of the same from being sepa metal itself is to be used as a rece tacle for the flux, said metal may be forme as a sub stantiallyflinear body of U-shaped or tujbular cross section. This 'U-shaped, or tubular. portion, .as the case ma be, filled with theflux, I may, ifI esire, with- 5" out departing from the. iritof my invention, the flux an the soldering EDUARD STEIN- stick to be used inconnection with the sol- In carrying out my invention I use solder Therefore the invention consists in a sol dering stick, the soldering metal ofwhich parts sodium chlorid; 35 'parts' being is the same.

. r e fl sfl of mt mm. Patented Feb. 11,1913. -App lication filed February}, 1909. Serial No. 477,000.

gether and place them for use in any suitablere xeptacle adapted to-be heated.-

. In order to accomplish the results aimed at by this invention I preferably em'ploya soldering stick which contains not only the solder, but the flux also. The-new soldering stick may beconstructed in a great many. different ways, some of which have. been shown in the accompanying drawings, in which Figure 1 is a longitudinal section oi one form of a soldering stick embodying my in% vention and Fig. 1 a cross section thereof Figs. 2 andQ are corresponding views-of a secondform, Figs; 3 and 3 show a third metal, the latter oomminuted form, tov form, Figsz t and 4 a fourth and Figs. 5 and 54 a fifth form. In Fig. 6 I have shown a modification in which the container tor the flux is different from the solderingmetal;

F ig.. 7 shows a further modification, where ya metal container is used which ,at the same time incloses the flux and solder intermixed with each other. As shown inFigs. 1 and 1% the soldering metal A isv madein the she eof a tube,-

preferably of a capillary c aracter-fand within said tube is containeda flux-B. in

- thefs ha pe of powder or. paste-,- but prefer-. ably in the ,shape of, a very fine powder, the.

ingredients'of whieh"are1.well mixed. -The metal -A may be' aluminiumfor an alloy rich in aluminium and the flux-may be any one of the approved. mixtures of salts. F-or instance, I may employ the following mixture: 30 parts by. weight of-cryolite; 35

chlorid. When' the lower endof e solder ing stick is heated, the fins. adjacent to In this manner thedanger of dissociationiis otassium avoided, and a uniform melt 'of'theflux will '7 be formed in theinteiior of the stick. If this stick is then brought into proximity to the joint and hea-te' "further, the flux in the interior of. this stickiwill become soft and finally a drop of molten fluxwill fall on the pieces to be unite'd and at practically the same time a drop of metal will reach the aluminium pieces. In practice the flux may drop on the aluminium'a little earlier than the molten solder, but the effect It will therefore be seen that the flux, at the moment of its activity, has the desired constitution, cleans the joint and of sheet aluminium. Alloys containing alu minium can also be soldered readily in this manner.

' 5 the tube 'containi The soldering stick shown in Figs. 2 and 2" comprises a strip of sheet metal A bent to form ,acapillary U-shaped channel in which the flux B is contained. In Figs. 3 and 3 I have shown a spirally wound'strip A, forming. a tube in which the flux B is contained; H Figs-4' and 4 show flat strips A bound together bywires C and containing the flux between them. InFigs. 5 and i the flugrB is formed by braided narrow strips or wires A. All of these various forms of my invention are used in the same way as described with referenceto Figs. 1 and 1.

jWhen it is intended to use the device shown in Fig. 6 a suitable portion of the flux composition is grasped by the tongs D which are slidably mounted on a stick of aluminium orthe like soldering metal, so

' joined which preferably are previously heatthat the tongs are filled with F. Then the system is heated by a flame, while the stick is resting on the metal pieces to be ed. When the melting of solder and flux begins, the stick is drawn along the seam p resu'ltingin a perfect soldering joint.

In the case of'using the device-0f Fig: 7 a mixture of flux composition and solder is grasped by tongs G, so that the tongs are filled with a portion H of same, .wh'ereafter the heating and soldering takes place substantially in the" same manner as above described.

I claim as my invention:

1. ,A soldering stick consisting of a subflux compositgon connected thereto the flux composition eing contained in a metal re ceptacle and comprising components of different melting and volatilizing points capable of dissolving oxid of aluminium. 2. A soldering stick consisting of a sub stantially linear body having a large percentage of aluminium and a-flux composition connected thereto, the fluxcomposition being contained in a metal receptacle and comprising components of different melting and volatilizing points capable of dissolving oxid of aluminium.

3. A soldering stick consisting of a-substantially linear body of soldering metal consisting of rich aluminium alloy forming a receptacle and a flux composition in closed in said receptacleand com rising components of different melting an vola tilizing p oints capable of dissolving oxid of aluminium.

1. A soldering stick consisting of a sub- 5. A soldering'stick consisting of a subistantially linear body of"-'soldering metal rich in aluminium, forminga-receptacle, a flux composition capable of dissolving aluminium oxid inclosed in said receptacle and comprising components ofdifferent melting and volatilizing points, ,the melting point of' the composition approximating that "of the soldering metal aforesaid.

'In witness whereof I have hereunto set my hand and s'eal'in the presence of two subscribing witnesses. CARL simian s'rrmwrc. a 5.

Witnesses:

' O'r'ro KoNIG,

WILIIELM 'Fnmn znrcas. 

